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核心就是相同的key会获取锁失败，此时可以抛出重复请求异常
定义一个注解：
NoRepeatSubmit：
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface NoRepeatSubmit {
/**
* 设置请求锁定时间
*
* @return
*/
int lockTime() default 10;
}
AOP：
@Aspect
@Component
@Slf4j
public class RepeatSubmitAspect {
@Autowired
private RedisLock redisLock;
@Pointcut("@annotation(noRepeatSubmit)")
public void pointCut(NoRepeatSubmit noRepeatSubmit) {
}
@Around("pointCut(noRepeatSubmit)")
public Object around(ProceedingJoinPoint pjp, NoRepeatSubmit noRepeatSubmit) throws Throwable {
int lockSeconds = noRepeatSubmit.lockTime();
HttpServletRequest request = RequestHolder.getHttpServletRequest();
Assert.notNull(request, "request can not null");
String bearerToken = request.getHeader("Authorization");
String[] tokens = bearerToken.split(" ");
String token = tokens[1];
String path = request.getServletPath();
String key = getKey(token, path);
String clientId = getClientId();
boolean isSuccess = redisLock.tryLock(key, clientId, lockSeconds);
log.info("tryLock key = [{}], clientId = [{}]", key, clientId);
if (isSuccess) {
log.info("tryLock success, key = [{}], clientId = [{}]", key, clientId);
// 获取锁成功
Object result;
try {
// 执行进程
result = pjp.proceed();
} finally {
// 解锁
redisLock.releaseLock(key, clientId);
log.info("releaseLock success, key = [{}], clientId = [{}]", key, clientId);
}
return result;
} else {
// 获取锁失败，认为是重复提交的请求
log.info("tryLock fail, key = [{}]", key);
///return ApiResult.fail("重复请求，请稍后再试");
throw new BadRequestException("重复请求，请稍后再试");
}
}
private String getKey(String token, String path) {
return token + path;
}
private String getClientId() {
return UUID.randomUUID().toString();
}
}
